Swap out DBS Mod for different antenna?

Last year I had the folks at DBS install their flat panel external antenna on my P3P. All was fine with noticeable distance increase. In the last four months, regardless where I fly it, my distance has gone back down to the stock range; 1.5 mi. (Perhaps my distance increase wasn't as much as I thought it was?) Everything with my P3P is the same and running well. I've emailed the guys at DBS many times now with my concerns but no answer. Time to move on.

Has anybody installed a different manufacture's external antenna after a DBS installation? Many apologies if my question is convoluted and many thanks in advance!

I don't think so as I was in a wide open field many times with full line of sight. Weird as it was very good in the beginning. After many, many unanswered emails to DBS I finally went and ordered the new panel MaxxRange. Never really could figure out the overall degrading performance on the old one ( did all the suggested tweaks) but I do hope this lives up to its name.

True! I hadn't used my P3P in about two weeks and when I did lo and behold yet ANOTHER update. Not much more to say that hasn't already been said. I'm sure it's all for the good but getting tired of it.